Pipeline for powder negative pressure pneumatic conveying

Abstract

The utility model belongs to the technical field of powder negative pressure conveying, and particularly relates to a pipeline for powder negative pressure pneumatic conveying, which is characterized in that an isolation cavity is formed in the inner wall of a bent pipe part; the bent pipe part is provided with a plurality of air inlet channels, and the air inlet channels extend to the isolation cavity from the outer wall of the bent pipe part; an air blowing part is arranged on the outer wall of the bent pipe part, and the air blowing part communicates with the air inlet channel; when powder flows through the bent pipe part, the blowing part is suitable for blowing air to the air inlet channel so that air isolation can be formed between the powder and the inner wall of the bent pipe part, the inner diameter of the bent pipe part can be increased through the isolation cavity so that impact between the powder and the inner wall of the bent pipe part can be reduced, and therefore generation of static electricity can be reduced; and meanwhile, the blowing part is arranged to blow air into the isolation cavity, so that gas isolation is formed between the powder and the inner wall of the bent pipe part, the powder is prevented from impacting the inner wall of the bent pipe part, and therefore impact between the powder and the inner wall of the bent pipe part is further reduced, and generation of static electricity is further reduced.

Description

Technical Field

[0001] This utility model belongs to the field of powder negative pressure conveying technology, specifically relating to a pipeline for powder negative pressure pneumatic conveying. Background Technology

[0002] As a new energy battery, lithium batteries usually require the mixing of several materials before preparation, including particulate powders such as natural graphite powder, electrolyte lithium salt, and lithium manganese oxide. For the transportation of powders, pneumatic conveying is often used, preferably negative pressure conveying. However, during the actual process of pneumatic conveying of powders, static electricity is generated due to the collision between the powder and the inner wall of the pipe, and this phenomenon is more likely to occur at the bends in the pipe.

[0003] Therefore, a negative pressure pneumatic conveying pipeline for powder is designed to solve the technical problem of excessive static electricity generated when powder is conveyed through bends in existing pipelines.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0005] This disclosure provides at least one embodiment of a pipeline for negative pressure pneumatic conveying of powder, comprising:

[0006] The bend in the pipe has an isolation cavity formed in its inner wall; and

[0007] The bent section is provided with several air intake channels, and the air intake channels extend from the outer wall of the bent section to the isolation cavity;

[0008] The outer wall of the bend is provided with an air blowing section, and the air blowing section is connected to the air inlet channel; wherein

[0009] When the powder flows through the bend, the blowing section is adapted to blow air into the air inlet channel to create a gas barrier between the powder and the inner wall of the bend.

[0010] In one optional embodiment, the blowing part includes a blowing sleeve and an air inlet pipe disposed on the outer wall of the blowing sleeve;

[0011] The air-blowing sleeve is fitted over the bent section; and

[0012] The air intake pipe is connected to the air intake channel, and the air intake pipe is adapted to blow air into the air intake channel.

[0013] In one optional embodiment, the inner wall of the air blowing sleeve has a distribution cavity, and the distribution cavity communicates with the air inlet channel; and

[0014] The distribution chamber is connected to the air intake pipe.

[0015] In one optional embodiment, the air intake passage is angled, and

[0016] After passing through the air intake channel, the gas forms a swirling flow within the isolation chamber.

[0017] In one optional embodiment, the bent section has an inlet and an outlet; and

[0018] The cross-sectional diameter of the isolation cavity gradually increases from the inlet to the outlet.

[0019] In one optional embodiment, the isolation chamber is provided with a feed ramp on the side near the feed inlet, and

[0020] The isolation chamber is located on the side near the discharge port and is provided with a discharge ramp;

[0021] The slope of the discharge ramp is less than the slope of the feed ramp.

[0022] In one optional embodiment, the bend further includes a ramp channel extending from the outer wall of the bend to the discharge ramp; and

[0023] The ramp channel is connected to the distribution cavity.

[0024] In one optional embodiment, a straight feed pipe is provided on the side of the bent pipe near the feed inlet;

[0025] The feed straight pipe section is connected to the flange of the bend pipe section.

[0026] In one optional embodiment, a straight discharge pipe is provided on the side of the bent pipe near the discharge port;

[0027] The straight discharge pipe is connected to the flange of the bent pipe.

[0028] The beneficial effects of this utility model are that the powder negative pressure pneumatic conveying pipe, by opening an isolation cavity in the inner wall of the bend, increases the inner diameter of the bend, thereby reducing the impact between the powder and the inner wall of the bend, thus reducing the generation of static electricity; at the same time, by setting an air blowing part to blow air into the isolation cavity, a gas isolation is formed between the powder and the inner wall of the bend, which hinders the impact of the powder on the inner wall of the bend, thereby further reducing the impact between the powder and the inner wall of the bend, and thus further reducing the generation of static electricity.

[0029] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the structure of the bent pipe section and the air blowing section provided in an embodiment of this disclosure;

[0033] Figure 2 for Figure 1 Schematic diagram of section AA;

[0034] Figure 3 This is a schematic diagram of the structure of a powder negative pressure pneumatic conveying pipeline provided in an embodiment of this disclosure.

[0035] In the picture:

[0036] 1. Bend section; 11. Isolation chamber; 12. Air inlet channel; 13. Feed inlet; 14. Discharge outlet; 15. Feed ramp; 16. Discharge ramp; 17. Ramp channel;

[0037] 2. Air blowing section; 21. Air blowing sleeve; 22. Air inlet pipe; 23. Distribution chamber;

[0038] 3. Feed straight pipe section;

[0039] 4. Discharge straight pipe section. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0042] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0043] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0044] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0045] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0046] Research has found that in the actual operation of existing pneumatic conveying of powder, static electricity is generated due to the collision between the powder and the inner wall of the pipe, and this phenomenon is more likely to occur at bends in the pipe.

[0047] like Figure 1 As shown, based on the above research, this disclosure provides a pipeline for negative pressure pneumatic conveying of powder, including: a bent section 1, the inner wall of which is provided with an isolation cavity 11, the isolation cavity 11 being an annular cavity, the inner wall of the bent section 1 also being bent, the isolation cavity 11 increasing the inner diameter of the bent section 1 to reduce the impact between the powder and the inner wall of the bent section 1, thereby reducing the generation of static electricity; and the bent section 1 being provided with a plurality of air inlet channels 12, the air inlet channels 12 extending from the outer wall of the bent section 1 to the isolation cavity 11, each air inlet channel 12 being evenly distributed along the circumference. The cloth, through the air inlet channel 12, can blow air into the isolation chamber 11; an air blowing part 2 is provided on the outer wall of the bent tube 1, and the air blowing part 2 is connected to the air inlet channel 12, and the air blowing part 2 provides gas to the air inlet channel 12; when the powder flows through the bent tube 1, the air blowing part 2 blows air into the air inlet channel 12, so that the air inlet channel 12 blows air into the isolation chamber 11, so that a gas isolation is formed between the powder and the inner wall of the bent tube 1, which hinders the powder from impacting the inner wall of the bent tube 1, thereby reducing the impact between the powder and the inner wall of the bent tube 1, and thus reducing the generation of static electricity.

[0048] like Figure 1 As shown, in some embodiments, the air blowing part 2 includes an air blowing sleeve 21 and an air inlet pipe 22 disposed on the outer wall of the air blowing sleeve 21; the air blowing sleeve 21 has an annular structure and is sleeved on the bent pipe part 1; and the air inlet pipe 22 is connected to the air inlet channel 12, and air is blown into the air inlet channel 12 through the air inlet pipe 22 to realize air blowing into the isolation cavity 11.

[0049] like Figure 1As shown, it should be noted that if the gas introduced into the isolation chamber 11 from each air inlet channel 12 is different, the isolation effect of the gas on the powder and the inner wall of the bend 1 will also be different. Therefore, the gas introduced into the air inlet pipe 22 needs to be evenly distributed into each air inlet channel 12. In order to solve the above problem, a distribution chamber 23 is provided on the inner wall of the blowing sleeve 21, and the distribution chamber 23 is connected to the air inlet channel 12; and the distribution chamber 23 is connected to the air inlet pipe 22. Through the setting of the distribution chamber 23, the gas introduced into the air inlet pipe 22 can be evenly distributed into each air inlet channel 12, thereby evenly isolating the powder from the inner wall of the bend 1.

[0050] like Figure 2 As shown, in some embodiments, the air intake channel 12 is inclined, and the gas forms a swirling flow in the isolation cavity 11 after passing through the air intake channel 12. The formation of the swirling flow helps to form a gas isolation area between the powder and the inner wall of the bend 1.

[0051] like Figure 1 As shown, in some embodiments, the bent tube 1 has a feed inlet 13 and a discharge outlet 14; and the cross-sectional diameter of the isolation cavity 11 gradually increases from the feed inlet 13 to the discharge outlet 14. By increasing the inner diameter of the bent tube 1 on the discharge outlet 14 side, the impact between the powder and the inner wall of the bent tube 1 is further reduced, thereby reducing the generation of static electricity.

[0052] like Figure 1 As shown, in some embodiments, the isolation cavity 11 is provided with a feeding ramp 15 on the side near the feed inlet 13. The feeding ramp 15 allows the inner wall of the bend section 1 to smoothly transition with the isolation cavity 11, avoiding powder residue. The isolation cavity 11 is also provided with a discharge ramp 16 on the side near the discharge outlet 14. The discharge ramp 16 not only allows the inner wall of the bend section 1 to smoothly transition with the isolation cavity 11, avoiding powder residue, but also guides the powder when it impacts the discharge ramp 16, reducing the impact of the powder on the inner wall of the bend section 1. The slope of the discharge ramp 16 is less than that of the feeding ramp 15. By further reducing the slope of the discharge ramp 16, the discharge ramp 16 becomes gentler, further reducing the impact force of the powder on the inner wall of the bend section 1, thereby reducing the generation of static electricity.

[0053] like Figure 1As shown, in some embodiments, the bent pipe section 1 is further provided with a ramp channel 17, and the ramp channel 17 extends from the outer wall of the bent pipe section 1 to the discharge ramp 16; and the ramp channel 17 is connected to the distribution chamber 23. With this design, the gas introduced by the air inlet pipe 22 can pass through the ramp channel 17 and be blown out from the discharge ramp 16, thereby creating a gas isolation area between the powder and the discharge ramp 16, preventing the powder from impacting the discharge ramp 16, and thus reducing the generation of static electricity.

[0054] like Figure 3 As shown, in some embodiments, a straight feed pipe section 3 is provided on the side of the bent pipe section 1 near the feed inlet 13; the straight feed pipe section 3 is flange-connected to the bent pipe section 1, and the powder is transported into the bent pipe section 1 through the straight feed pipe section 3.

[0055] like Figure 3 As shown, in some embodiments, a straight discharge pipe section 4 is provided on the side of the bent pipe section 1 near the discharge port 14; the straight discharge pipe section 4 is flange-connected to the bent pipe section 1, and the powder is discharged from the bent pipe section 1 through the straight discharge pipe section 4.

[0056] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0058] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0059] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0060] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pipeline for negative pressure pneumatic conveying of powder, characterized in that, include: The bent section (1) has an isolation cavity (11) on its inner wall; and The bent section (1) is provided with a plurality of air intake channels (12), and the air intake channels (12) extend from the outer wall of the bent section (1) to the isolation cavity (11). The outer wall of the bent section (1) is provided with an air blowing section (2), and the air blowing section (2) is connected to the air inlet channel (12); wherein When the powder flows through the bent section (1), the blowing section (2) is adapted to blow air into the air inlet channel (12) so that a gas barrier is formed between the powder and the inner wall of the bent section (1).

2. The powder negative pressure pneumatic conveying pipeline as described in claim 1, characterized in that, The blowing part (2) includes a blowing sleeve (21) and an air inlet pipe (22) disposed on the outer wall of the blowing sleeve (21). The air blowing sleeve (21) is fitted over the bent section (1); and The air intake pipe (22) is connected to the air intake channel (12), and the air intake pipe (22) is adapted to blow air into the air intake channel (12).

3. The powder negative pressure pneumatic conveying pipeline as described in claim 2, characterized in that, The inner wall of the blowing sleeve (21) is provided with a distribution cavity (23), and the distribution cavity (23) is connected to the air inlet channel (12); and The distribution chamber (23) is connected to the air intake pipe (22).

4. The powder negative pressure pneumatic conveying pipeline as described in claim 3, characterized in that, The air intake channel (12) is inclined, and After passing through the air intake channel (12), the gas forms a swirling flow in the isolation cavity (11).

5. The powder negative pressure pneumatic conveying pipeline as described in claim 3, characterized in that, The bent section (1) has an inlet (13) and an outlet (14); and The cross-sectional diameter of the isolation cavity (11) gradually increases from the feed inlet (13) to the discharge outlet (14).

6. The powder negative pressure pneumatic conveying pipeline as described in claim 5, characterized in that, The isolation chamber (11) is provided with a feeding ramp (15) on the side near the feed inlet (13), and The isolation chamber (11) is provided with a discharge ramp (16) on the side near the discharge port (14). The slope of the discharge ramp (16) is less than the slope of the feed ramp (15).

7. The powder negative pressure pneumatic conveying pipeline as described in claim 6, characterized in that, The bent section (1) is further provided with a ramp channel (17), and the ramp channel (17) extends from the outer wall of the bent section (1) to the discharge ramp (16); and The ramp channel is connected to the distribution cavity (23).

8. The powder negative pressure pneumatic conveying pipeline as described in claim 5, characterized in that, The bent section (1) is provided with a straight feed section (3) on the side near the feed inlet (13). The feed straight pipe section (3) is flanged to the bend section (1).

9. A powder negative pressure pneumatic conveying pipeline as described in claim 5, characterized in that, The bent section (1) is provided with a straight discharge section (4) on the side near the discharge port (14). The discharge straight pipe section (4) is connected to the flange of the bent pipe section (1).

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